Research on typhoon disaster emergency management from a social network perspective: a case study of typhoon "Doksuri"

In the context of global climate change intensifying typhoon disaster risks, this paper adopts a social-network analysis perspective and uses Typhoon Doksuri (2023) as a typical case to examine the structural characteristics and operating mechanisms of government emergency coordination networks. By collecting publicly available government documents and media reports and applying UCINET and Gephi, we constructed a coordination network model containing 44 departments and 10 working groups. We then carried out an empirical analysis combining centrality analysis, the coreperiphery model, and matrix analysis methods. The results indicate: (1) the Inspection Group, the Integrated Group, and the Relocation & Resettlement Group occupy core positions in the network and undertake cross-departmental coordination and supervisory functions; (2) the Ministry of Emergency Management, water resources departments, and the Flood Control and Drought Relief Command act as core hub nodes, with centrality measures significantly higher than those of other departments; (3) the Safety Alert Group and the Logistics Support Group are located at the networks periphery and their coordination efficiency needs urgent improvement; (4) the network displays a marked coreperiphery structure: coreness (Coreness = 5.429) is significantly higher than periphery (Periphery = 2.000). Based on these findings, we propose a three-dimensional pathway to optimize the coordination network: improve cross-departmental linkage mechanisms, strengthen the emergency capacities of key nodes, and establish a long-term support (guarantee) mechanism providing theoretical basis and practical reference for improving the effectiveness of typhoon disaster emergency governance.